Not a good look, Jonathan Cheban -- and we're not just talking about the fur anymore!
Technically, @SophisticatedVegan (real name Nancy Sidley) started the fight by calling Jonathan a "furhag" over his unethical fashion choices.
But he IMMEDIATELY got rude, putting Sidley's body in his sights. Just look at the gross things he wrote about her -- that she cleverly screen grabbed, naturally:
[Image via Instagram.]